S1 E1 • Resurrection of Ideon

Humanoid aliens known as the Buff Clan discover the Earth colony planet Solo, where archeologists have found 3 large armored trucks from the 'Sixth Civilization' a long extinct alien civilization. Karala Ajiba, daughter of the Buff Clan military commander heads down to Solo along with her assistant Mayaya and is pursued by her colleagues Gije Zaral and Damido Pechi. A panicked Buff Clan soldier attacks one of the Solo excavation sites, triggering an interstellar war. Seeking cover, some of the colonists including Cosmo Yuki, Kasha Imhof, Bes Jordan and Sheryl Formosa board the armored trucks, which combine to form the god-like mecha, Ideon, which fights off the enemy.

Première diffusion : 8 mai 1980

S1 E2 • Destruction of New Lopia

The Ideon's 3 vessels revert to their normal forms after the battle is over and are equipped with powerful weapons under the direction of Bes. Bes later runs into Karala in the woods, mistaking her for a colonist. Gije leads an attack on Solo to rescue Karala, and totally destroys Solo's capital, New Lopia. Fleeing from the attack, a group of children including a baby, Piper Lou, board the Ideon, which finds the strength to fight off the Buff Clan once again. Sheryl meanwhile heads to the second excavation site, where a giant spaceship has been discovered.

Première diffusion : 15 mai 1980

S1 E3 • Bursting Earth

Karala is reunited with Mayaya aboard the Solo Ship. Gije and Damido request help from their commander, Abadede, and launch yet another attack on Solo in order to rescue Karala. Bes discovers that Karala and Mayaya are actually Buff Clan aliens. During the ensuing battle with the Buff Clan, the Solo Ship rises from out of the ground.

Première diffusion : 22 mai 1980

S1 E4 • Escape from Planet Solo

Première diffusion : 29 mai 1980

S1 E5 • Infinite Power: Legendary Ide

Première diffusion : 5 juin 1980

S1 E6 • White Flag of Betrayal

Première diffusion : 12 juin 1980

S1 E7 • Escape from Null-Space

Première diffusion : 19 juin 1980

S1 E8 • Battle in the Sandstorm

Première diffusion : 26 juin 1980

S1 E9 • Burning Null-Space

Première diffusion : 3 juillet 1980

S1 E10 • Suprise Attack of the Bajin

Première diffusion : 10 juillet 1980

S1 E11 • Pursuit to the Ruined Planet

Première diffusion : 17 juillet 1980

S1 E12 • Break Through the Enemy's Front

Première diffusion : 24 juillet 1980

S1 E13 • Attack on the Alien

Première diffusion : 31 juillet 1980

S1 E14 • Doku's Attack Strategy

Première diffusion : 7 août 1980

S1 E15 • Plan for Retrieving Ideon

Première diffusion : 14 août 1980

S1 E16 • Damido's Lethal Strategy

Première diffusion : 21 août 1980

S1 E17 • Battle on the Ape Planet

Première diffusion : 28 août 1980

S1 E18 • Betrayal on Ajian

Première diffusion : 4 septembre 1980

S1 E19 • Gyamose's Special Command

Première diffusion : 11 septembre 1980

S1 E20 • Battle the Devil Twins

Première diffusion : 18 septembre 1980

S1 E21 • Sink the Enemy's Battleship

Première diffusion : 25 septembre 1980

S1 E22 • The Legend Lives Again

Première diffusion : 1 octobre 1980

S1 E23 • The Shocking Decoy Planet

Première diffusion : 8 octobre 1980

S1 E24 • Strike the Infiltrating Guerillas

Première diffusion : 15 octobre 1980

S1 E25 • Ideon's Counterattack

Première diffusion : 22 octobre 1980

S1 E26 • Deadly Fight - Fear of Gel

Première diffusion : 29 octobre 1980

S1 E27 • Infiltrate the Lunar Base

Première diffusion : 5 novembre 1980

S1 E28 • Wrath of the Wave Gun

Première diffusion : 12 novembre 1980

S1 E29 • Sparkling Sword

Première diffusion : 19 novembre 1980

S1 E30 • Desperate Sniper

Première diffusion : 26 novembre 1980

S1 E31 • Home Aflame

Première diffusion : 3 décembre 1980

S1 E32 • Amidst the Flames of Fate

Première diffusion : 10 décembre 1980

S1 E33 • Waft Area Gamble

Première diffusion : 17 décembre 1980

S1 E34 • After the Meteors Fall

Première diffusion : 24 décembre 1980

S1 E35 • Surfacing from Darkness

Première diffusion : 31 décembre 1980

S1 E36 • Farewell, Solo Ship

The crew of the Solo Ship decide to abandon it and make a deal with Marshall Franklin such that they can take refuge and the Solo Ship will be destroyed. However shortly after departing, Franklin betrays them and sends his troops to recover the Solo Ship and disarm the bombs on board. As the Solo Ship's crew rushes back to it, a Buff Clan fleet also arrives and a three way battle ensues, in which Franklin is killed. The Solo Ship's crew fails to disarms the bombs in time, but the Ide creates a protective barrier that prevents it from being destroyed.

Première diffusion : 7 janvier 1981

S1 E37 • Colony of Hatred

The Solo Ship returns to the planet Ajian seeking refuge from the Buff Clan. Bes makes a deal with Ajian's leader, Commodore, such that the civilians of the Solo Ship will be allowed to remain on Ajian. Commodore conspires with a Buff Clan officer and instead ends up taking all of the civilians hostage, killing Sheryl's sister, Lin. Bes, Gije and the others rush back to save them and Sheryl ends up killing Commodore. Doba, unsatisfied with the performance of his officers, personally starts heading out to take on the Solo Ship and Ideon.

Première diffusion : 14 janvier 1981

S1 E38 • The Space Runaway

The Solo Ship lands on the planet Steckin Star in order to rest before yet another battle. Harulu sends her forces there and a battle ensues. During the fighting Gije is killed and the Ideon goes berserk, slicing the entire planet in half with the Ideon swords.

Première diffusion : 21 janvier 1981

S1 E39 • In the Cosmos With You

Karala and Joliver are transported to the Buff Clan flagship, the Bairal Jin. There, Karala encounters her father Doba, and reveals to him that she is pregnant with Bes's child. The Solo Ship and Ideon rush to the Bairal Jin to rescue Karala and Joliver. Although their shuttle is destroyed in the battle, Karala and Joliver are protected by the Ide and make it out alive. As the Solo Ship escapes, Doba demands his army to follow them. With the meeting between Doba and Karala ending up as a failure to reconcile the differences between humanity and the Buff Clan, the Ide wipes out both races.

Première diffusion : 28 janvier 1981